There are no sound and picture on the TV when an MHL cable is connected to the port replicator.

The port replicator does not support the MHL® function. Therefore, there will be no sound and picture on the TV when your MHL device is connected to the port replicator. To resolve this, connect the MHL cable directly to the HDMI 2/MHL or HDMI 4/MHL input of the TV.

NOTE: If you are connecting an MHL device that supports 4K resolution, connect the MHL cable directly to the HDMI 2/MHL input of the TV.